
Industrial Managed
Ethernet Switch
User Manual
錯誤
!
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]
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Page
38
of
191
document. Atop does not provide this software to the users
.
Tutorial of Modbus read and write examples are
illustrated below.
Note:
The switch only supports Modbus function code 03, 04
)
for Read
(
and 06
)
for Write
(.
Read Registers
(This example shows how to read the switch
’s IP address.)
Figure 2.34 Mapping Table of Modbus Address for Switch
’s IP Address
1. Make sure that a supervising computer (Modbus Master) is connected to your target switch (Modbus Slave)
over Ethernet network.
2. Launch
Modbus Poll
in the supervising computer. Note a registration key may be required for a long-term
use of Modbus Poll after 30-day evaluation period. Additionally, there is a 10
-
minute trial limitation for the
connection to the managed switch.
3. Click
Connect
button on the top toolbar to enter Connection Setup dialog by selecting
Connect
…
menu
as shown in Figure 2.35.
Figure 2.35 Entering Connection Setup Menu of the Modbus Poll
4. Select
Modbus TCP/IP
as the
Connection
mode and enter the switch
’s IP address inside the
Remote
Modbus Server
’s
IP Address or Node Name
field at the bottom as shown in Figure 2.36. The
Port
number